The correct answer is d) limestone.
Clastic sedimentary rocks are formed from the accumulation of sediment, which consists of fragments of other rocks or minerals. Sandstone, shale, and conglomerate all fall under this category as they are composed of various sized particles cemented together. Sandstone is primarily made of sand-sized particles, shale is made from smaller mud-sized particles, and conglomerate contains larger rounded clasts. On the other hand, limestone is classified as a chemical or biochemical sedimentary rock because it forms primarily from the accumulation of calcium carbonate, often from the remains of marine organisms, rather than from clastic particles. Therefore, limestone does not fit into the category of clastic sedimentary rocks.